I think you could minimise the wear by making sure the bolt is clean, that is, no super sharp edges and the top of it polished mirror shiny or close to it, versus rough. I polish the tops on all revolvers and it does help reduce the line appearing. Along with a film of oil, perhaps. I have an Uberti with no problems and also a little brass framed Rem. .31 that I bought used. It has a pretty good line around the cylinder. Well I would be curious to compare it to some original Remmy photos online and see if it is just normal or if it is something to do with modern production quality. Think most Italians benefit from hand fitting or parts polishing when you have time for it. Deburring too.
Your gun is like your nose, it is just wrong for someone else to pick it for you!